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<div class="title">/data/users/matthijs/github_faiss/faiss/MetaIndexes.cpp</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright (c) 2015-present, Facebook, Inc.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * This source code is licensed under the BSD+Patents license found in the</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * LICENSE file in the root directory of this source tree.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;</div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">// Copyright 2004-present Facebook. All Rights Reserved</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">// -*- c++ -*-</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;</div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &quot;MetaIndexes.h&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;</div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;pthread.h&gt;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &lt;cstdio&gt;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#include &quot;FaissAssert.h&quot;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#include &quot;Heap.h&quot;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &quot;AuxIndexStructures.h&quot;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="keyword">namespace </span>faiss {</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="comment">/*****************************************************</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment"> * IndexIDMap implementation</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment"> *******************************************************/</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;IndexIDMap::IndexIDMap (Index *index):</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    index (index),</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    own_fields (false)</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;{</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    FAISS_THROW_IF_NOT_MSG (index-&gt;ntotal == 0, <span class="stringliteral">&quot;index must be empty on input&quot;</span>);</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a> = index-&gt;is_trained;</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> = index-&gt;metric_type;</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a> = index-&gt;verbose;</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a> = index-&gt;d;</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;}</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIDMap.html#a16cce6c1e83d0d5f069c9b0399896450">   40</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap.html#a16cce6c1e83d0d5f069c9b0399896450">IndexIDMap::add</a> (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a>, <span class="keyword">const</span> <span class="keywordtype">float</span> *)</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;{</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    FAISS_THROW_MSG (<span class="stringliteral">&quot;add does not make sense with IndexIDMap, &quot;</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;                      <span class="stringliteral">&quot;use add_with_ids&quot;</span>);</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;}</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;</div>
<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIDMap.html#ac873cb03aa323a06dca5d6f3af5fe559">   47</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap.html#ac873cb03aa323a06dca5d6f3af5fe559">IndexIDMap::train</a> (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span> *x)</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;{</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    index-&gt;<a class="code" href="structfaiss_1_1Index.html#abf601502bdbfa02b9d7bcd7b3671b71d">train</a> (n, x);</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a> = index-&gt;<a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;}</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div>
<div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIDMap.html#a70aca5b0f665c5a109d5dadf1e13b448">   53</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap.html#a70aca5b0f665c5a109d5dadf1e13b448">IndexIDMap::reset</a> ()</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;{</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    index-&gt;<a class="code" href="structfaiss_1_1Index.html#a849361f5f0ab0aba8d419c86f2594191">reset</a> ();</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> = 0;</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;}</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;</div>
<div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIDMap.html#aeace75e53648c052d05c357b744e090b">   60</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap.html#aeace75e53648c052d05c357b744e090b">IndexIDMap::add_with_ids</a> (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span> * x, <span class="keyword">const</span> <span class="keywordtype">long</span> *xids)</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;{</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    index-&gt;<a class="code" href="structfaiss_1_1Index.html#a1b5e9ac70adbce0897dd6c8276ad96f2">add</a> (n, x);</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    <span class="keywordflow">for</span> (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> i = 0; i &lt; n; i++)</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;        <a class="code" href="structfaiss_1_1IndexIDMap.html#ad1cc5658f1879f6a2b00d76cca58cf3b">id_map</a>.push_back (xids[i]);</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> = index-&gt;<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;}</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div>
<div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIDMap.html#a2f36fa9150a465b48952afbba856e2a1">   69</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap.html#a2f36fa9150a465b48952afbba856e2a1">IndexIDMap::search</a> (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span> *x, <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> k,</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;                              <span class="keywordtype">float</span> *distances, <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> *labels)<span class="keyword"> const</span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    index-&gt;<a class="code" href="structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7">search</a> (n, x, k, distances, labels);</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> *li = labels;</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    <span class="keywordflow">for</span> (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> i = 0; i &lt; n * k; i++) {</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;        li[i] = li[i] &lt; 0 ? li[i] : <a class="code" href="structfaiss_1_1IndexIDMap.html#ad1cc5658f1879f6a2b00d76cca58cf3b">id_map</a>[li[i]];</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    }</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;}</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div>
<div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIDMap.html#a7dbeaf9d44d6783d371f12405e8b7f40">   80</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap.html#a7dbeaf9d44d6783d371f12405e8b7f40">IndexIDMap::range_search</a> (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span> *x, <span class="keywordtype">float</span> radius,</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;                   <a class="code" href="structfaiss_1_1RangeSearchResult.html">RangeSearchResult</a> *result)<span class="keyword"> const</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;  index-&gt;<a class="code" href="structfaiss_1_1Index.html#a236897832a58dbb205e2d662c1929fb1">range_search</a>(n, x, radius, result);</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;  <span class="keywordflow">for</span> (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> i = 0; i &lt; result-&gt;<a class="code" href="structfaiss_1_1RangeSearchResult.html#aef57f9db99ca470c01bcdce0366cb6ff">lims</a>[result-&gt;<a class="code" href="structfaiss_1_1RangeSearchResult.html#a29269b98c33af874d379ca4f62408b90">nq</a>]; i++) {</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;      result-&gt;<a class="code" href="structfaiss_1_1RangeSearchResult.html#aa8ff848474a4cc16c5464cc4ec187824">labels</a>[i] = result-&gt;<a class="code" href="structfaiss_1_1RangeSearchResult.html#aa8ff848474a4cc16c5464cc4ec187824">labels</a>[i] &lt; 0 ?</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;        result-&gt;<a class="code" href="structfaiss_1_1RangeSearchResult.html#aa8ff848474a4cc16c5464cc4ec187824">labels</a>[i] : <a class="code" href="structfaiss_1_1IndexIDMap.html#ad1cc5658f1879f6a2b00d76cca58cf3b">id_map</a>[result-&gt;<a class="code" href="structfaiss_1_1RangeSearchResult.html#aa8ff848474a4cc16c5464cc4ec187824">labels</a>[i]];</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;  }</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;}</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="keyword">namespace </span>{</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;<span class="keyword">struct </span>IDTranslatedSelector: <a class="code" href="structfaiss_1_1IDSelector.html">IDSelector</a> {</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;    <span class="keyword">const</span> std::vector &lt;long&gt; &amp; id_map;</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    <span class="keyword">const</span> <a class="code" href="structfaiss_1_1IDSelector.html">IDSelector</a> &amp; sel;</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    IDTranslatedSelector (<span class="keyword">const</span> std::vector &lt;long&gt; &amp; id_map,</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;                          <span class="keyword">const</span> <a class="code" href="structfaiss_1_1IDSelector.html">IDSelector</a> &amp; sel):</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;        id_map (id_map), sel (sel)</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    {}</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;    <span class="keywordtype">bool</span> is_member(idx_t <span class="keywordtype">id</span>)<span class="keyword"> const override </span>{</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;      <span class="keywordflow">return</span> sel.is_member(id_map[<span class="keywordtype">id</span>]);</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;    }</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;};</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;}</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;</div>
<div class="line"><a name="l00106"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIDMap.html#a699ca4891bf3a437b2a182c04d33d9b9">  106</a></span>&#160;<span class="keywordtype">long</span> <a class="code" href="structfaiss_1_1IndexIDMap.html#a699ca4891bf3a437b2a182c04d33d9b9">IndexIDMap::remove_ids</a> (<span class="keyword">const</span> <a class="code" href="structfaiss_1_1IDSelector.html">IDSelector</a> &amp; sel)</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;{</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    <span class="comment">// remove in sub-index first</span></div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;    IDTranslatedSelector sel2 (<a class="code" href="structfaiss_1_1IndexIDMap.html#ad1cc5658f1879f6a2b00d76cca58cf3b">id_map</a>, sel);</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    <span class="keywordtype">long</span> nremove = index-&gt;<a class="code" href="structfaiss_1_1Index.html#af8bf7bd97aeed8ad5fc48b242379a68a">remove_ids</a> (sel2);</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    <span class="keywordtype">long</span> j = 0;</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;    <span class="keywordflow">for</span> (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> i = 0; i &lt; <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>; i++) {</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;        <span class="keywordflow">if</span> (sel.is_member (<a class="code" href="structfaiss_1_1IndexIDMap.html#ad1cc5658f1879f6a2b00d76cca58cf3b">id_map</a>[i])) {</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;            <span class="comment">// remove</span></div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;            <a class="code" href="structfaiss_1_1IndexIDMap.html#ad1cc5658f1879f6a2b00d76cca58cf3b">id_map</a>[j] = <a class="code" href="structfaiss_1_1IndexIDMap.html#ad1cc5658f1879f6a2b00d76cca58cf3b">id_map</a>[i];</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;            j++;</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;        }</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;    }</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    FAISS_ASSERT (j == index-&gt;<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>);</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    ntotal = j;</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    <a class="code" href="structfaiss_1_1IndexIDMap.html#ad1cc5658f1879f6a2b00d76cca58cf3b">id_map</a>.resize(ntotal);</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;    <span class="keywordflow">return</span> nremove;</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;}</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;IndexIDMap::~IndexIDMap ()</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;{</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1IndexIDMap.html#affa8a764304410c96489c2b2e178bcdb">own_fields</a>) <span class="keyword">delete</span> index;</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;}</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="comment">/*****************************************************</span></div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;<span class="comment"> * IndexIDMap2 implementation</span></div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;<span class="comment"> *******************************************************/</span></div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;IndexIDMap2::IndexIDMap2 (Index *index): IndexIDMap (index)</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;{}</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;</div>
<div class="line"><a name="l00142"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIDMap2.html#a33ff76975891695c2fa45ed26fc8eae9">  142</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap2.html#a33ff76975891695c2fa45ed26fc8eae9">IndexIDMap2::add_with_ids</a>(idx_t n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x, <span class="keyword">const</span> <span class="keywordtype">long</span>* xids)</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;{</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    <span class="keywordtype">size_t</span> prev_ntotal = <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>;</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    <a class="code" href="structfaiss_1_1IndexIDMap.html#aeace75e53648c052d05c357b744e090b">IndexIDMap::add_with_ids</a> (n, x, xids);</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = prev_ntotal; i &lt; <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>; i++) {</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;        rev_map [<a class="code" href="structfaiss_1_1IndexIDMap.html#ad1cc5658f1879f6a2b00d76cca58cf3b">id_map</a> [i]] = i;</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;    }</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;}</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;</div>
<div class="line"><a name="l00151"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIDMap2.html#a646302669189e370d9d864fc18f096fe">  151</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap2.html#a646302669189e370d9d864fc18f096fe">IndexIDMap2::construct_rev_map</a> ()</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;{</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;    rev_map.clear ();</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>; i++) {</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;        rev_map [<a class="code" href="structfaiss_1_1IndexIDMap.html#ad1cc5658f1879f6a2b00d76cca58cf3b">id_map</a> [i]] = i;</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    }</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;}</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;</div>
<div class="line"><a name="l00160"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIDMap2.html#a87e313ebc8dd62fb734a61a6d95a98f0">  160</a></span>&#160;<span class="keywordtype">long</span> <a class="code" href="structfaiss_1_1IndexIDMap2.html#a87e313ebc8dd62fb734a61a6d95a98f0">IndexIDMap2::remove_ids</a>(<span class="keyword">const</span> <a class="code" href="structfaiss_1_1IDSelector.html">IDSelector</a>&amp; sel)</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;{</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    <span class="comment">// This is quite inefficient</span></div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    <span class="keywordtype">long</span> nremove = <a class="code" href="structfaiss_1_1IndexIDMap.html#a699ca4891bf3a437b2a182c04d33d9b9">IndexIDMap::remove_ids</a> (sel);</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    <a class="code" href="structfaiss_1_1IndexIDMap2.html#a646302669189e370d9d864fc18f096fe">construct_rev_map</a> ();</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;    <span class="keywordflow">return</span> nremove;</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;}</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;</div>
<div class="line"><a name="l00168"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIDMap2.html#a3660adb35a3299bc328988f5ff2199fe">  168</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIDMap2.html#a3660adb35a3299bc328988f5ff2199fe">IndexIDMap2::reconstruct</a> (idx_t key, <span class="keywordtype">float</span> * recons)<span class="keyword"> const</span></div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    <span class="keywordflow">try</span> {</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;        index-&gt;<a class="code" href="structfaiss_1_1Index.html#aaef6f4132b1f390121ebb11058baf190">reconstruct</a> (rev_map.at (key), recons);</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;    } <span class="keywordflow">catch</span> (<span class="keyword">const</span> std::out_of_range&amp; e) {</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;        FAISS_THROW_FMT (<span class="stringliteral">&quot;key %ld not found&quot;</span>, key);</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    }</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;}</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;<span class="comment">/*****************************************************</span></div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;<span class="comment"> * IndexShards implementation</span></div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;<span class="comment"> *******************************************************/</span></div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;<span class="comment">// subroutines</span></div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;<span class="keyword">namespace </span>{</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;<span class="keyword">typedef</span> <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a> idx_t;</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">class</span> Job&gt;</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;<span class="keyword">struct </span>Thread {</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;    Job job;</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;    pthread_t thread;</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;    Thread () {}</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;    <span class="keyword">explicit</span> Thread (<span class="keyword">const</span> Job &amp; job): job(job) {}</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;    <span class="keywordtype">void</span> start () {</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;        pthread_create (&amp;thread, <span class="keyword">nullptr</span>, run, <span class="keyword">this</span>);</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;    }</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;    <span class="keywordtype">void</span> wait () {</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;        pthread_join (thread, <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;    }</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;    <span class="keyword">static</span> <span class="keywordtype">void</span> * run (<span class="keywordtype">void</span> *arg) {</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;        <span class="keyword">static_cast&lt;</span>Thread*<span class="keyword">&gt;</span> (arg)-&gt;job.run();</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;    }</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;};</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;<span class="comment">/// callback + thread management to train 1 shard</span></div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;<span class="comment"></span><span class="keyword">struct </span>TrainJob {</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;    IndexShards *index;    <span class="comment">// the relevant index</span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;    <span class="keywordtype">int</span> no;                <span class="comment">// shard number</span></div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;    idx_t n;               <span class="comment">// train points</span></div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">float</span> *x;</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;    <span class="keywordtype">void</span> run ()</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    {</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;        <span class="keywordflow">if</span> (index-&gt;verbose)</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;            printf (<span class="stringliteral">&quot;begin train shard %d on %ld points\n&quot;</span>, no, n);</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;        index-&gt;shard_indexes [no]-&gt;train(n, x);</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;        <span class="keywordflow">if</span> (index-&gt;verbose)</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;            printf (<span class="stringliteral">&quot;end train shard %d\n&quot;</span>, no);</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;    }</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;};</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;<span class="keyword">struct </span>AddJob {</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;    IndexShards *index;    <span class="comment">// the relevant index</span></div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;    <span class="keywordtype">int</span> no;                <span class="comment">// shard number</span></div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;    idx_t n;</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">float</span> *x;</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;    <span class="keyword">const</span> idx_t *ids;</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;    <span class="keywordtype">void</span> run ()</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;    {</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;        <span class="keywordflow">if</span> (index-&gt;verbose)</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;            printf (<span class="stringliteral">&quot;begin add shard %d on %ld points\n&quot;</span>, no, n);</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;        <span class="keywordflow">if</span> (ids)</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;            index-&gt;shard_indexes[no]-&gt;add_with_ids (n, x, ids);</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;        <span class="keywordflow">else</span></div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;            index-&gt;shard_indexes[no]-&gt;add (n, x);</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;        <span class="keywordflow">if</span> (index-&gt;verbose)</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;            printf (<span class="stringliteral">&quot;end add shard %d on %ld points\n&quot;</span>, no, n);</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;    }</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;};</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;<span class="comment">/// callback + thread management to query in 1 shard</span></div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;<span class="comment"></span><span class="keyword">struct </span>QueryJob {</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;    <span class="keyword">const</span> IndexShards *index;    <span class="comment">// the relevant index</span></div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;    <span class="keywordtype">int</span> no;                <span class="comment">// shard number</span></div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;    <span class="comment">// query params</span></div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;    idx_t n;</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">float</span> *x;</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;    idx_t k;</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;    <span class="keywordtype">float</span> *distances;</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;    idx_t *labels;</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;    <span class="keywordtype">void</span> run ()</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;    {</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;        <span class="keywordflow">if</span> (index-&gt;verbose)</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;            printf (<span class="stringliteral">&quot;begin query shard %d on %ld points\n&quot;</span>, no, n);</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;        index-&gt;shard_indexes [no]-&gt;search (n, x, k,</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;                                           distances, labels);</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;        <span class="keywordflow">if</span> (index-&gt;verbose)</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;            printf (<span class="stringliteral">&quot;end query shard %d\n&quot;</span>, no);</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;    }</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;};</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;<span class="comment">// add translation to all valid labels</span></div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;<span class="keywordtype">void</span> translate_labels (<span class="keywordtype">long</span> n, idx_t *labels, <span class="keywordtype">long</span> translation)</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;{</div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;    <span class="keywordflow">if</span> (translation == 0) <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">long</span> i = 0; i &lt; n; i++) {</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;        <span class="keywordflow">if</span>(labels[i] &lt; 0) <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;        labels[i] += translation;</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;    }</div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;}</div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;</div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;<span class="comment">/** merge result tables from several shards.</span></div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;<span class="comment"> * @param all_distances  size nshard * n * k</span></div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;<span class="comment"> * @param all_labels     idem</span></div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;<span class="comment"> * @param translartions  label translations to apply, size nshard</span></div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;</div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> C&gt;</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;<span class="keywordtype">void</span> merge_tables (<span class="keywordtype">long</span> n, <span class="keywordtype">long</span> k, <span class="keywordtype">long</span> nshard,</div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;                   <span class="keywordtype">float</span> *distances, idx_t *labels,</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;                   <span class="keyword">const</span> <span class="keywordtype">float</span> *all_distances,</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;                   idx_t *all_labels,</div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;                   <span class="keyword">const</span> <span class="keywordtype">long</span> *translations)</div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;{</div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;    <span class="keywordflow">if</span>(k == 0) {</div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;    }</div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;</div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;    <span class="keywordtype">long</span> stride = n * k;</div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;<span class="preprocessor">#pragma omp parallel</span></div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;<span class="preprocessor"></span>    {</div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;        std::vector&lt;int&gt; buf (2 * nshard);</div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;        <span class="keywordtype">int</span> * pointer = buf.data();</div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;        <span class="keywordtype">int</span> * shard_ids = pointer + nshard;</div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;        std::vector&lt;float&gt; buf2 (nshard);</div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;        <span class="keywordtype">float</span> * heap_vals = buf2.data();</div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;<span class="preprocessor">#pragma omp for</span></div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;<span class="preprocessor"></span>        <span class="keywordflow">for</span> (<span class="keywordtype">long</span> i = 0; i &lt; n; i++) {</div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;            <span class="comment">// the heap maps values to the shard where they are</span></div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;            <span class="comment">// produced.</span></div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">float</span> *D_in = all_distances + i * k;</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;            <span class="keyword">const</span> idx_t *I_in = all_labels + i * k;</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;            <span class="keywordtype">int</span> heap_size = 0;</div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">long</span> s = 0; s &lt; nshard; s++) {</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;                pointer[s] = 0;</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;                <span class="keywordflow">if</span> (I_in[stride * s] &gt;= 0)</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;                    heap_push&lt;C&gt; (++heap_size, heap_vals, shard_ids,</div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;                                 D_in[stride * s], s);</div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;            }</div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;</div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;            <span class="keywordtype">float</span> *D = distances + i * k;</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;            idx_t *I = labels + i * k;</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j &lt; k; j++) {</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;                <span class="keywordflow">if</span> (heap_size == 0) {</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;                    I[j] = -1;</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;                    D[j] = C::neutral();</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;                } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;                    <span class="comment">// pop best element</span></div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;                    <span class="keywordtype">int</span> s = shard_ids[0];</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;                    <span class="keywordtype">int</span> &amp; p = pointer[s];</div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;                    D[j] = heap_vals[0];</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;                    I[j] = I_in[stride * s + p] + translations[s];</div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;</div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;                    heap_pop&lt;C&gt; (heap_size--, heap_vals, shard_ids);</div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;                    p++;</div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;                    <span class="keywordflow">if</span> (p &lt; k &amp;&amp; I_in[stride * s + p] &gt;= 0)</div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;                        heap_push&lt;C&gt; (++heap_size, heap_vals, shard_ids,</div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;                                     D_in[stride * s + p], s);</div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;                }</div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;            }</div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;        }</div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;    }</div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;}</div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;</div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;};</div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;</div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;</div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;</div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;</div>
<div class="line"><a name="l00367"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexShards.html#ad987a18a1786919e32cc02ca36e5ab46">  367</a></span>&#160;<a class="code" href="structfaiss_1_1IndexShards.html#ad987a18a1786919e32cc02ca36e5ab46">IndexShards::IndexShards</a> (idx_t d, <span class="keywordtype">bool</span> threaded, <span class="keywordtype">bool</span> successive_ids):</div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;    <a class="code" href="structfaiss_1_1Index.html">Index</a> (d), own_fields (false),</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;    threaded (threaded), successive_ids (successive_ids)</div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;{</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;</div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;}</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;</div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;<span class="keywordtype">void</span> IndexShards::add_shard (<a class="code" href="structfaiss_1_1Index.html">Index</a> *idx)</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;{</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;    shard_indexes.push_back (idx);</div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;    sync_with_shard_indexes ();</div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;}</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;</div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;<span class="keywordtype">void</span> IndexShards::sync_with_shard_indexes ()</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;{</div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;    <span class="keywordflow">if</span> (shard_indexes.empty()) <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;    Index * index0 = shard_indexes[0];</div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a> = index0-&gt;d;</div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> = index0-&gt;metric_type;</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a> = index0-&gt;is_trained;</div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> = index0-&gt;ntotal;</div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i &lt; shard_indexes.size(); i++) {</div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;        Index * index = shard_indexes[i];</div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;        FAISS_THROW_IF_NOT (<a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> == index-&gt;metric_type);</div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;        FAISS_THROW_IF_NOT (<a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a> == index-&gt;d);</div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;        <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> += index-&gt;ntotal;</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;    }</div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;}</div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;</div>
<div class="line"><a name="l00397"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexShards.html#a36fbcc85eed9bf2ea15587f04be9ae0b">  397</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexShards.html#a36fbcc85eed9bf2ea15587f04be9ae0b">IndexShards::train</a> (idx_t n, <span class="keyword">const</span> <span class="keywordtype">float</span> *x)</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;{</div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;</div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;    <span class="comment">// pre-alloc because we don&#39;t want reallocs</span></div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;    std::vector&lt;Thread&lt;TrainJob &gt; &gt; tss (shard_indexes.size());</div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;    <span class="keywordtype">int</span> nt = 0;</div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; shard_indexes.size(); i++) {</div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;        <span class="keywordflow">if</span>(!shard_indexes[i]-&gt;<a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>) {</div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;            TrainJob ts = {<span class="keyword">this</span>, i, n, x};</div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;            <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1IndexShards.html#a493da171720f2c3f35058f793fb9a6ce">threaded</a>) {</div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;                tss[nt] = Thread&lt;TrainJob&gt; (ts);</div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;                tss[nt++].start();</div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;            } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;                ts.run();</div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;            }</div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;        }</div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;    }</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nt; i++) {</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;        tss[i].wait();</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;    }</div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;    sync_with_shard_indexes ();</div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;}</div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;</div>
<div class="line"><a name="l00420"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexShards.html#a2e06889521c566525011eb46cc97cda6">  420</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexShards.html#a2e06889521c566525011eb46cc97cda6">IndexShards::add</a> (idx_t n, <span class="keyword">const</span> <span class="keywordtype">float</span> *x)</div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;{</div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;    <a class="code" href="structfaiss_1_1IndexShards.html#a1f771d50133494f682f05c9ab9e39ad9">add_with_ids</a> (n, x, <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;}</div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;</div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;</div>
<div class="line"><a name="l00426"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexShards.html#a1f771d50133494f682f05c9ab9e39ad9">  426</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexShards.html#a1f771d50133494f682f05c9ab9e39ad9">IndexShards::add_with_ids</a> (idx_t n, <span class="keyword">const</span> <span class="keywordtype">float</span> * x, <span class="keyword">const</span> <span class="keywordtype">long</span> *xids)</div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;{</div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;</div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;    FAISS_THROW_IF_NOT_MSG(!(successive_ids &amp;&amp; xids),</div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;                   <span class="stringliteral">&quot;It makes no sense to pass in ids and &quot;</span></div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;                   <span class="stringliteral">&quot;request them to be shifted&quot;</span>);</div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;</div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;    <span class="keywordflow">if</span> (successive_ids) {</div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;      FAISS_THROW_IF_NOT_MSG(!xids,</div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;                       <span class="stringliteral">&quot;It makes no sense to pass in ids and &quot;</span></div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;                       <span class="stringliteral">&quot;request them to be shifted&quot;</span>);</div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;      FAISS_THROW_IF_NOT_MSG(<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> == 0,</div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;                       <span class="stringliteral">&quot;when adding to IndexShards with sucessive_ids, &quot;</span></div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;                       <span class="stringliteral">&quot;only add() in a single pass is supported&quot;</span>);</div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;    }</div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;    <span class="keywordtype">long</span> nshard = shard_indexes.size();</div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">long</span> *ids = xids;</div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;    <a class="code" href="structfaiss_1_1ScopeDeleter.html">ScopeDeleter&lt;long&gt;</a> del;</div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;    <span class="keywordflow">if</span> (!ids &amp;&amp; !successive_ids) {</div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;        <span class="keywordtype">long</span> *aids = <span class="keyword">new</span> <span class="keywordtype">long</span>[n];</div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">long</span> i = 0; i &lt; n; i++)</div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;            aids[i] = <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> + i;</div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;        ids = aids;</div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;        del.set (ids);</div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;    }</div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;</div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;    std::vector&lt;Thread&lt;AddJob &gt; &gt; asa (shard_indexes.size());</div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;    <span class="keywordtype">int</span> nt = 0;</div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nshard; i++) {</div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;        <span class="keywordtype">long</span> i0 = i * n / nshard;</div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;        <span class="keywordtype">long</span> i1 = (i + 1) * n / nshard;</div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;</div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;        AddJob as = {<span class="keyword">this</span>, i,</div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;                       i1 - i0, x + i0 * <a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>,</div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;                       ids ? ids + i0 : <span class="keyword">nullptr</span>};</div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1IndexShards.html#a493da171720f2c3f35058f793fb9a6ce">threaded</a>) {</div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;            asa[nt] = Thread&lt;AddJob&gt;(as);</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;            asa[nt++].start();</div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;            as.run();</div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;        }</div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;    }</div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nt; i++) {</div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;        asa[i].wait();</div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;    }</div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> += n;</div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;}</div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;</div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;</div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;</div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;</div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;</div>
<div class="line"><a name="l00479"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexShards.html#aa7dc5d020de4a0552058cbf2844cb00f">  479</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexShards.html#aa7dc5d020de4a0552058cbf2844cb00f">IndexShards::reset</a> ()</div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;{</div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; shard_indexes.size(); i++) {</div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;        shard_indexes[i]-&gt;reset ();</div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;    }</div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;    sync_with_shard_indexes ();</div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;}</div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;</div>
<div class="line"><a name="l00487"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexShards.html#a83391295650370e8987358a898bb2cca">  487</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexShards.html#a83391295650370e8987358a898bb2cca">IndexShards::search</a> (</div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;           idx_t n, <span class="keyword">const</span> <span class="keywordtype">float</span> *x, idx_t k,</div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;           <span class="keywordtype">float</span> *distances, idx_t *labels)<span class="keyword"> const</span></div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;    <span class="keywordtype">long</span> nshard = shard_indexes.size();</div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;    <span class="keywordtype">float</span> *all_distances = <span class="keyword">new</span> <span class="keywordtype">float</span> [nshard * k * n];</div>
<div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;    idx_t *all_labels = <span class="keyword">new</span> idx_t [nshard * k * n];</div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;    <a class="code" href="structfaiss_1_1ScopeDeleter.html">ScopeDeleter&lt;float&gt;</a> del (all_distances);</div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;    <a class="code" href="structfaiss_1_1ScopeDeleter.html">ScopeDeleter&lt;idx_t&gt;</a> del2 (all_labels);</div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;</div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;<span class="preprocessor">#if 1</span></div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;    <span class="comment">// pre-alloc because we don&#39;t want reallocs</span></div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;    std::vector&lt;Thread&lt;QueryJob&gt; &gt; qss (nshard);</div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nshard; i++) {</div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;        QueryJob qs = {</div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;            <span class="keyword">this</span>, i, n, x, k,</div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;            all_distances + i * k * n,</div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;            all_labels + i * k * n</div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;        };</div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1IndexShards.html#a493da171720f2c3f35058f793fb9a6ce">threaded</a>) {</div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;            qss[i] = Thread&lt;QueryJob&gt; (qs);</div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;            qss[i].start();</div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;            qs.run();</div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;        }</div>
<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;    }</div>
<div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;</div>
<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1IndexShards.html#a493da171720f2c3f35058f793fb9a6ce">threaded</a>) {</div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; qss.size(); i++) {</div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;            qss[i].wait();</div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;        }</div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;    }</div>
<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;    <span class="comment">// pre-alloc because we don&#39;t want reallocs</span></div>
<div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;    std::vector&lt;QueryJob&gt; qss (nshard);</div>
<div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nshard; i++) {</div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;        QueryJob qs = {</div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;            <span class="keyword">this</span>, i, n, x, k,</div>
<div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;            all_distances + i * k * n,</div>
<div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;            all_labels + i * k * n</div>
<div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;        };</div>
<div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1IndexShards.html#a493da171720f2c3f35058f793fb9a6ce">threaded</a>) {</div>
<div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;            qss[i] = qs;</div>
<div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;            qs.run();</div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;        }</div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;    }</div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;</div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1IndexShards.html#a493da171720f2c3f35058f793fb9a6ce">threaded</a>) {</div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;<span class="preprocessor">#pragma omp parallel for</span></div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;<span class="preprocessor"></span>        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; qss.size(); i++) {</div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;            qss[i].run();</div>
<div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;        }</div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;    }</div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;</div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;<span class="preprocessor"></span>    std::vector&lt;long&gt; translations (nshard, 0);</div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;    <span class="keywordflow">if</span> (successive_ids) {</div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;        translations[0] = 0;</div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> s = 0; s + 1 &lt; nshard; s++)</div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;            translations [s + 1] = translations [s] +</div>
<div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;                shard_indexes [s]-&gt;<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>;</div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;    }</div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;</div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> == METRIC_L2) {</div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;        merge_tables&lt; CMin&lt;float, int&gt; &gt; (</div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;             n, k, nshard, distances, labels,</div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;             all_distances, all_labels, translations.data ());</div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;        merge_tables&lt; CMax&lt;float, int&gt; &gt; (</div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;             n, k, nshard, distances, labels,</div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;             all_distances, all_labels, translations.data ());</div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;    }</div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;</div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;}</div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;</div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;</div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;</div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;IndexShards::~IndexShards ()</div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;{</div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;    <span class="keywordflow">if</span> (own_fields) {</div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> s = 0; s &lt; shard_indexes.size(); s++)</div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;            <span class="keyword">delete</span> shard_indexes [s];</div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;    }</div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;}</div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;</div>
<div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;</div>
<div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;<span class="comment">/*****************************************************</span></div>
<div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;<span class="comment"> * IndexSplitVectors implementation</span></div>
<div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;<span class="comment"> *******************************************************/</span></div>
<div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;</div>
<div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;</div>
<div class="line"><a name="l00581"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexSplitVectors.html#a70ba3367a08722fe4466dc49c21a4d2b">  581</a></span>&#160;<a class="code" href="structfaiss_1_1IndexSplitVectors.html#a70ba3367a08722fe4466dc49c21a4d2b">IndexSplitVectors::IndexSplitVectors</a> (idx_t d, <span class="keywordtype">bool</span> threaded):</div>
<div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;    <a class="code" href="structfaiss_1_1Index.html">Index</a> (d), own_fields (false),</div>
<div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;    threaded (threaded), sum_d (0)</div>
<div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;{</div>
<div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;</div>
<div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;}</div>
<div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;</div>
<div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;<span class="keywordtype">void</span> IndexSplitVectors::add_sub_index (<a class="code" href="structfaiss_1_1Index.html">Index</a> *index)</div>
<div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;{</div>
<div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;    sub_indexes.push_back (index);</div>
<div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;    sync_with_sub_indexes ();</div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;}</div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;</div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;<span class="keywordtype">void</span> IndexSplitVectors::sync_with_sub_indexes ()</div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;{</div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;    <span class="keywordflow">if</span> (sub_indexes.empty()) <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;    Index * index0 = sub_indexes[0];</div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;    sum_d = index0-&gt;d;</div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> = index0-&gt;metric_type;</div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a> = index0-&gt;is_trained;</div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> = index0-&gt;ntotal;</div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i &lt; sub_indexes.size(); i++) {</div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;        Index * index = sub_indexes[i];</div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;        FAISS_THROW_IF_NOT (<a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> == index-&gt;metric_type);</div>
<div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;        FAISS_THROW_IF_NOT (<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> == index-&gt;ntotal);</div>
<div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;        sum_d += index-&gt;d;</div>
<div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;    }</div>
<div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;</div>
<div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;}</div>
<div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;</div>
<div class="line"><a name="l00611"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexSplitVectors.html#af2ef88dc72b4a94f1190ecc8cb25881b">  611</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexSplitVectors.html#af2ef88dc72b4a94f1190ecc8cb25881b">IndexSplitVectors::add</a>(idx_t <span class="comment">/*n*/</span>, <span class="keyword">const</span> <span class="keywordtype">float</span>* <span class="comment">/*x*/</span>) {</div>
<div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;  FAISS_THROW_MSG(<span class="stringliteral">&quot;not implemented&quot;</span>);</div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;}</div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;</div>
<div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;<span class="keyword">namespace </span>{</div>
<div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;<span class="comment">/// callback + thread management to query in 1 shard</span></div>
<div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;<span class="comment"></span><span class="keyword">struct </span>SplitQueryJob {</div>
<div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160;    <span class="keyword">const</span> <a class="code" href="structfaiss_1_1IndexSplitVectors.html">IndexSplitVectors</a> *index;    <span class="comment">// the relevant index</span></div>
<div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;    <span class="keywordtype">int</span> no;                <span class="comment">// shard number</span></div>
<div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;</div>
<div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;    <span class="comment">// query params</span></div>
<div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;    idx_t n;</div>
<div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">float</span> *x;</div>
<div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;    idx_t k;</div>
<div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160;    <span class="keywordtype">float</span> *distances;</div>
<div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;    idx_t *labels;</div>
<div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;</div>
<div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;</div>
<div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160;    <span class="keywordtype">void</span> run ()</div>
<div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;    {</div>
<div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;        <span class="keywordflow">if</span> (index-&gt;<a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>)</div>
<div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;            printf (<span class="stringliteral">&quot;begin query shard %d on %ld points\n&quot;</span>, no, n);</div>
<div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160;        <span class="keyword">const</span> <a class="code" href="structfaiss_1_1Index.html">Index</a> * sub_index = index-&gt;sub_indexes[no];</div>
<div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;        <span class="keywordtype">long</span> sub_d = sub_index-&gt;<a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>, d = index-&gt;<a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>;</div>
<div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;        idx_t ofs = 0;</div>
<div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; no; i++) ofs += index-&gt;sub_indexes[i]-&gt;<a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>;</div>
<div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;        <span class="keywordtype">float</span> *sub_x = <span class="keyword">new</span> <span class="keywordtype">float</span> [sub_d * n];</div>
<div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;        <a class="code" href="structfaiss_1_1ScopeDeleter.html">ScopeDeleter&lt;float&gt;</a> del (sub_x);</div>
<div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;        <span class="keywordflow">for</span> (idx_t i = 0; i &lt; n; i++)</div>
<div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;            memcpy (sub_x + i * sub_d, x + ofs + i * d, sub_d * <span class="keyword">sizeof</span> (sub_x));</div>
<div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;        sub_index-&gt;<a class="code" href="structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7">search</a> (n, sub_x, k, distances, labels);</div>
<div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;        <span class="keywordflow">if</span> (index-&gt;<a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>)</div>
<div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;            printf (<span class="stringliteral">&quot;end query shard %d\n&quot;</span>, no);</div>
<div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;    }</div>
<div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160;</div>
<div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;};</div>
<div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160;</div>
<div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;</div>
<div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;</div>
<div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;}</div>
<div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;</div>
<div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;</div>
<div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;</div>
<div class="line"><a name="l00655"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexSplitVectors.html#a4a010daf51e44d9717e94400cc23c159">  655</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexSplitVectors.html#a4a010daf51e44d9717e94400cc23c159">IndexSplitVectors::search</a> (</div>
<div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;           idx_t n, <span class="keyword">const</span> <span class="keywordtype">float</span> *x, idx_t k,</div>
<div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;           <span class="keywordtype">float</span> *distances, idx_t *labels)<span class="keyword"> const</span></div>
<div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;    FAISS_THROW_IF_NOT_MSG (k == 1,</div>
<div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;                      <span class="stringliteral">&quot;search implemented only for k=1&quot;</span>);</div>
<div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;    FAISS_THROW_IF_NOT_MSG (sum_d == d,</div>
<div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;                      <span class="stringliteral">&quot;not enough indexes compared to # dimensions&quot;</span>);</div>
<div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;</div>
<div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;    <span class="keywordtype">long</span> nshard = sub_indexes.size();</div>
<div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;    <span class="keywordtype">float</span> *all_distances = <span class="keyword">new</span> <span class="keywordtype">float</span> [nshard * k * n];</div>
<div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160;    idx_t *all_labels = <span class="keyword">new</span> idx_t [nshard * k * n];</div>
<div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160;    <a class="code" href="structfaiss_1_1ScopeDeleter.html">ScopeDeleter&lt;float&gt;</a> del (all_distances);</div>
<div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;    <a class="code" href="structfaiss_1_1ScopeDeleter.html">ScopeDeleter&lt;idx_t&gt;</a> del2 (all_labels);</div>
<div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160;</div>
<div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;    <span class="comment">// pre-alloc because we don&#39;t want reallocs</span></div>
<div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160;    std::vector&lt;Thread&lt;SplitQueryJob&gt; &gt; qss (nshard);</div>
<div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nshard; i++) {</div>
<div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;        SplitQueryJob qs = {</div>
<div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160;            <span class="keyword">this</span>, i, n, x, k,</div>
<div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;            i == 0 ? distances : all_distances + i * k * n,</div>
<div class="line"><a name="l00676"></a><span class="lineno">  676</span>&#160;            i == 0 ? labels : all_labels + i * k * n</div>
<div class="line"><a name="l00677"></a><span class="lineno">  677</span>&#160;        };</div>
<div class="line"><a name="l00678"></a><span class="lineno">  678</span>&#160;        <span class="keywordflow">if</span> (threaded) {</div>
<div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160;            qss[i] = Thread&lt;SplitQueryJob&gt; (qs);</div>
<div class="line"><a name="l00680"></a><span class="lineno">  680</span>&#160;            qss[i].start();</div>
<div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160;            qs.run();</div>
<div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;        }</div>
<div class="line"><a name="l00684"></a><span class="lineno">  684</span>&#160;    }</div>
<div class="line"><a name="l00685"></a><span class="lineno">  685</span>&#160;</div>
<div class="line"><a name="l00686"></a><span class="lineno">  686</span>&#160;    <span class="keywordflow">if</span> (threaded) {</div>
<div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; qss.size(); i++) {</div>
<div class="line"><a name="l00688"></a><span class="lineno">  688</span>&#160;            qss[i].wait();</div>
<div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160;        }</div>
<div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160;    }</div>
<div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160;</div>
<div class="line"><a name="l00692"></a><span class="lineno">  692</span>&#160;    <span class="keywordtype">long</span> factor = 1;</div>
<div class="line"><a name="l00693"></a><span class="lineno">  693</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nshard; i++) {</div>
<div class="line"><a name="l00694"></a><span class="lineno">  694</span>&#160;        <span class="keywordflow">if</span> (i &gt; 0) { <span class="comment">// results of 0 are already in the table</span></div>
<div class="line"><a name="l00695"></a><span class="lineno">  695</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">float</span> *distances_i = all_distances + i * k * n;</div>
<div class="line"><a name="l00696"></a><span class="lineno">  696</span>&#160;            <span class="keyword">const</span> idx_t *labels_i = all_labels + i * k * n;</div>
<div class="line"><a name="l00697"></a><span class="lineno">  697</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">long</span> j = 0; j &lt; n; j++) {</div>
<div class="line"><a name="l00698"></a><span class="lineno">  698</span>&#160;                <span class="keywordflow">if</span> (labels[j] &gt;= 0 &amp;&amp; labels_i[j] &gt;= 0) {</div>
<div class="line"><a name="l00699"></a><span class="lineno">  699</span>&#160;                    labels[j] += labels_i[j] * factor;</div>
<div class="line"><a name="l00700"></a><span class="lineno">  700</span>&#160;                    distances[j] += distances_i[j];</div>
<div class="line"><a name="l00701"></a><span class="lineno">  701</span>&#160;                } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00702"></a><span class="lineno">  702</span>&#160;                    labels[j] = -1;</div>
<div class="line"><a name="l00703"></a><span class="lineno">  703</span>&#160;                    distances[j] = 0.0 / 0.0;</div>
<div class="line"><a name="l00704"></a><span class="lineno">  704</span>&#160;                }</div>
<div class="line"><a name="l00705"></a><span class="lineno">  705</span>&#160;            }</div>
<div class="line"><a name="l00706"></a><span class="lineno">  706</span>&#160;        }</div>
<div class="line"><a name="l00707"></a><span class="lineno">  707</span>&#160;        factor *= sub_indexes[i]-&gt;ntotal;</div>
<div class="line"><a name="l00708"></a><span class="lineno">  708</span>&#160;    }</div>
<div class="line"><a name="l00709"></a><span class="lineno">  709</span>&#160;</div>
<div class="line"><a name="l00710"></a><span class="lineno">  710</span>&#160;}</div>
<div class="line"><a name="l00711"></a><span class="lineno">  711</span>&#160;</div>
<div class="line"><a name="l00712"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexSplitVectors.html#aafa4c780e325855fe247052453967845">  712</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexSplitVectors.html#aafa4c780e325855fe247052453967845">IndexSplitVectors::train</a>(idx_t <span class="comment">/*n*/</span>, <span class="keyword">const</span> <span class="keywordtype">float</span>* <span class="comment">/*x*/</span>) {</div>
<div class="line"><a name="l00713"></a><span class="lineno">  713</span>&#160;  FAISS_THROW_MSG(<span class="stringliteral">&quot;not implemented&quot;</span>);</div>
<div class="line"><a name="l00714"></a><span class="lineno">  714</span>&#160;}</div>
<div class="line"><a name="l00715"></a><span class="lineno">  715</span>&#160;</div>
<div class="line"><a name="l00716"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexSplitVectors.html#a8047981cb8d10c54107664c4955df402">  716</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexSplitVectors.html#a8047981cb8d10c54107664c4955df402">IndexSplitVectors::reset</a> ()</div>
<div class="line"><a name="l00717"></a><span class="lineno">  717</span>&#160;{</div>
<div class="line"><a name="l00718"></a><span class="lineno">  718</span>&#160;    FAISS_THROW_MSG (<span class="stringliteral">&quot;not implemented&quot;</span>);</div>
<div class="line"><a name="l00719"></a><span class="lineno">  719</span>&#160;}</div>
<div class="line"><a name="l00720"></a><span class="lineno">  720</span>&#160;</div>
<div class="line"><a name="l00721"></a><span class="lineno">  721</span>&#160;</div>
<div class="line"><a name="l00722"></a><span class="lineno">  722</span>&#160;IndexSplitVectors::~IndexSplitVectors ()</div>
<div class="line"><a name="l00723"></a><span class="lineno">  723</span>&#160;{</div>
<div class="line"><a name="l00724"></a><span class="lineno">  724</span>&#160;    <span class="keywordflow">if</span> (own_fields) {</div>
<div class="line"><a name="l00725"></a><span class="lineno">  725</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> s = 0; s &lt; sub_indexes.size(); s++)</div>
<div class="line"><a name="l00726"></a><span class="lineno">  726</span>&#160;            <span class="keyword">delete</span> sub_indexes [s];</div>
<div class="line"><a name="l00727"></a><span class="lineno">  727</span>&#160;    }</div>
<div class="line"><a name="l00728"></a><span class="lineno">  728</span>&#160;}</div>
<div class="line"><a name="l00729"></a><span class="lineno">  729</span>&#160;</div>
<div class="line"><a name="l00730"></a><span class="lineno">  730</span>&#160;</div>
<div class="line"><a name="l00731"></a><span class="lineno">  731</span>&#160;</div>
<div class="line"><a name="l00732"></a><span class="lineno">  732</span>&#160;</div>
<div class="line"><a name="l00733"></a><span class="lineno">  733</span>&#160;</div>
<div class="line"><a name="l00734"></a><span class="lineno">  734</span>&#160;</div>
<div class="line"><a name="l00735"></a><span class="lineno">  735</span>&#160;}; <span class="comment">// namespace faiss</span></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html_a36fbcc85eed9bf2ea15587f04be9ae0b"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#a36fbcc85eed9bf2ea15587f04be9ae0b">faiss::IndexShards::train</a></div><div class="ttdeci">void train(idx_t n, const float *x) override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00397">MetaIndexes.cpp:397</a></div></div>
<div class="ttc" id="structfaiss_1_1RangeSearchResult_html_a29269b98c33af874d379ca4f62408b90"><div class="ttname"><a href="structfaiss_1_1RangeSearchResult.html#a29269b98c33af874d379ca4f62408b90">faiss::RangeSearchResult::nq</a></div><div class="ttdeci">size_t nq</div><div class="ttdoc">nb of queries </div><div class="ttdef"><b>Definition:</b> <a href="AuxIndexStructures_8h_source.html#l00030">AuxIndexStructures.h:30</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html_ad987a18a1786919e32cc02ca36e5ab46"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#ad987a18a1786919e32cc02ca36e5ab46">faiss::IndexShards::IndexShards</a></div><div class="ttdeci">IndexShards(idx_t d, bool threaded=false, bool successive_ids=true)</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00367">MetaIndexes.cpp:367</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a849361f5f0ab0aba8d419c86f2594191"><div class="ttname"><a href="structfaiss_1_1Index.html#a849361f5f0ab0aba8d419c86f2594191">faiss::Index::reset</a></div><div class="ttdeci">virtual void reset()=0</div><div class="ttdoc">removes all elements from the database. </div></div>
<div class="ttc" id="structfaiss_1_1IndexIDMap_html_a2f36fa9150a465b48952afbba856e2a1"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#a2f36fa9150a465b48952afbba856e2a1">faiss::IndexIDMap::search</a></div><div class="ttdeci">void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00069">MetaIndexes.cpp:69</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html_a1f771d50133494f682f05c9ab9e39ad9"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#a1f771d50133494f682f05c9ab9e39ad9">faiss::IndexShards::add_with_ids</a></div><div class="ttdeci">void add_with_ids(idx_t n, const float *x, const long *xids) override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00426">MetaIndexes.cpp:426</a></div></div>
<div class="ttc" id="structfaiss_1_1IDSelector_html"><div class="ttname"><a href="structfaiss_1_1IDSelector.html">faiss::IDSelector</a></div><div class="ttdef"><b>Definition:</b> <a href="AuxIndexStructures_8h_source.html#l00052">AuxIndexStructures.h:52</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html_a83391295650370e8987358a898bb2cca"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#a83391295650370e8987358a898bb2cca">faiss::IndexShards::search</a></div><div class="ttdeci">void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00487">MetaIndexes.cpp:487</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIDMap2_html_a33ff76975891695c2fa45ed26fc8eae9"><div class="ttname"><a href="structfaiss_1_1IndexIDMap2.html#a33ff76975891695c2fa45ed26fc8eae9">faiss::IndexIDMap2::add_with_ids</a></div><div class="ttdeci">void add_with_ids(idx_t n, const float *x, const long *xids) override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00142">MetaIndexes.cpp:142</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_abf601502bdbfa02b9d7bcd7b3671b71d"><div class="ttname"><a href="structfaiss_1_1Index.html#abf601502bdbfa02b9d7bcd7b3671b71d">faiss::Index::train</a></div><div class="ttdeci">virtual void train(idx_t n, const float *x)</div><div class="ttdef"><b>Definition:</b> <a href="Index_8cpp_source.html#l00023">Index.cpp:23</a></div></div>
<div class="ttc" id="structfaiss_1_1ScopeDeleter_html"><div class="ttname"><a href="structfaiss_1_1ScopeDeleter.html">faiss::ScopeDeleter</a></div><div class="ttdef"><b>Definition:</b> <a href="FaissException_8h_source.html#l00039">FaissException.h:39</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexSplitVectors_html_a8047981cb8d10c54107664c4955df402"><div class="ttname"><a href="structfaiss_1_1IndexSplitVectors.html#a8047981cb8d10c54107664c4955df402">faiss::IndexSplitVectors::reset</a></div><div class="ttdeci">void reset() override</div><div class="ttdoc">removes all elements from the database. </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00716">MetaIndexes.cpp:716</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIDMap_html_a16cce6c1e83d0d5f069c9b0399896450"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#a16cce6c1e83d0d5f069c9b0399896450">faiss::IndexIDMap::add</a></div><div class="ttdeci">void add(idx_t n, const float *x) override</div><div class="ttdoc">this will fail. Use add_with_ids </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00040">MetaIndexes.cpp:40</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexSplitVectors_html"><div class="ttname"><a href="structfaiss_1_1IndexSplitVectors.html">faiss::IndexSplitVectors</a></div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8h_source.html#l00145">MetaIndexes.h:145</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a2a002388d2c081c2dbab8508dcefe73d"><div class="ttname"><a href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">faiss::Index::d</a></div><div class="ttdeci">int d</div><div class="ttdoc">vector dimension </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00064">Index.h:64</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIDMap_html_ad1cc5658f1879f6a2b00d76cca58cf3b"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#ad1cc5658f1879f6a2b00d76cca58cf3b">faiss::IndexIDMap::id_map</a></div><div class="ttdeci">std::vector&lt; long &gt; id_map</div><div class="ttdoc">! whether pointers are deleted in destructo </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8h_source.html#l00029">MetaIndexes.h:29</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIDMap_html_a7dbeaf9d44d6783d371f12405e8b7f40"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#a7dbeaf9d44d6783d371f12405e8b7f40">faiss::IndexIDMap::range_search</a></div><div class="ttdeci">void range_search(idx_t n, const float *x, float radius, RangeSearchResult *result) const override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00080">MetaIndexes.cpp:80</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a1b5e9ac70adbce0897dd6c8276ad96f2"><div class="ttname"><a href="structfaiss_1_1Index.html#a1b5e9ac70adbce0897dd6c8276ad96f2">faiss::Index::add</a></div><div class="ttdeci">virtual void add(idx_t n, const float *x)=0</div></div>
<div class="ttc" id="structfaiss_1_1IndexSplitVectors_html_aafa4c780e325855fe247052453967845"><div class="ttname"><a href="structfaiss_1_1IndexSplitVectors.html#aafa4c780e325855fe247052453967845">faiss::IndexSplitVectors::train</a></div><div class="ttdeci">void train(idx_t n, const float *x) override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00712">MetaIndexes.cpp:712</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html_a2e06889521c566525011eb46cc97cda6"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#a2e06889521c566525011eb46cc97cda6">faiss::IndexShards::add</a></div><div class="ttdeci">void add(idx_t n, const float *x) override</div><div class="ttdoc">supported only for sub-indices that implement add_with_ids </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00420">MetaIndexes.cpp:420</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a040c6aed1f224f3ea7bf58eebc0c31a4"><div class="ttname"><a href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a></div><div class="ttdeci">long idx_t</div><div class="ttdoc">all indices are this type </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00062">Index.h:62</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a6970683faa021b7a6f1a0865c0d4eccd"><div class="ttname"><a href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">faiss::Index::ntotal</a></div><div class="ttdeci">idx_t ntotal</div><div class="ttdoc">total nb of indexed vectors </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00065">Index.h:65</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIDMap2_html_a646302669189e370d9d864fc18f096fe"><div class="ttname"><a href="structfaiss_1_1IndexIDMap2.html#a646302669189e370d9d864fc18f096fe">faiss::IndexIDMap2::construct_rev_map</a></div><div class="ttdeci">void construct_rev_map()</div><div class="ttdoc">make the rev_map from scratch </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00151">MetaIndexes.cpp:151</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a5590d847c5c2b958affd2a05e58a6f23"><div class="ttname"><a href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">faiss::Index::verbose</a></div><div class="ttdeci">bool verbose</div><div class="ttdoc">verbosity level </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00066">Index.h:66</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexSplitVectors_html_af2ef88dc72b4a94f1190ecc8cb25881b"><div class="ttname"><a href="structfaiss_1_1IndexSplitVectors.html#af2ef88dc72b4a94f1190ecc8cb25881b">faiss::IndexSplitVectors::add</a></div><div class="ttdeci">void add(idx_t n, const float *x) override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00611">MetaIndexes.cpp:611</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_af8bf7bd97aeed8ad5fc48b242379a68a"><div class="ttname"><a href="structfaiss_1_1Index.html#af8bf7bd97aeed8ad5fc48b242379a68a">faiss::Index::remove_ids</a></div><div class="ttdeci">virtual long remove_ids(const IDSelector &amp;sel)</div><div class="ttdef"><b>Definition:</b> <a href="Index_8cpp_source.html#l00048">Index.cpp:48</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIDMap2_html_a87e313ebc8dd62fb734a61a6d95a98f0"><div class="ttname"><a href="structfaiss_1_1IndexIDMap2.html#a87e313ebc8dd62fb734a61a6d95a98f0">faiss::IndexIDMap2::remove_ids</a></div><div class="ttdeci">long remove_ids(const IDSelector &amp;sel) override</div><div class="ttdoc">remove ids adapted to IndexFlat </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00160">MetaIndexes.cpp:160</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html_a493da171720f2c3f35058f793fb9a6ce"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#a493da171720f2c3f35058f793fb9a6ce">faiss::IndexShards::threaded</a></div><div class="ttdeci">bool threaded</div><div class="ttdoc">should the sub-indexes be deleted along with this? </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8h_source.html#l00090">MetaIndexes.h:90</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_aced51b1ebc33c47ab3ae15ea906559a7"><div class="ttname"><a href="structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7">faiss::Index::search</a></div><div class="ttdeci">virtual void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const =0</div></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html_aa7dc5d020de4a0552058cbf2844cb00f"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#aa7dc5d020de4a0552058cbf2844cb00f">faiss::IndexShards::reset</a></div><div class="ttdeci">void reset() override</div><div class="ttdoc">removes all elements from the database. </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00479">MetaIndexes.cpp:479</a></div></div>
<div class="ttc" id="structfaiss_1_1RangeSearchResult_html"><div class="ttname"><a href="structfaiss_1_1RangeSearchResult.html">faiss::RangeSearchResult</a></div><div class="ttdef"><b>Definition:</b> <a href="AuxIndexStructures_8h_source.html#l00029">AuxIndexStructures.h:29</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIDMap_html_a70aca5b0f665c5a109d5dadf1e13b448"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#a70aca5b0f665c5a109d5dadf1e13b448">faiss::IndexIDMap::reset</a></div><div class="ttdeci">void reset() override</div><div class="ttdoc">removes all elements from the database. </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00053">MetaIndexes.cpp:53</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexSplitVectors_html_a4a010daf51e44d9717e94400cc23c159"><div class="ttname"><a href="structfaiss_1_1IndexSplitVectors.html#a4a010daf51e44d9717e94400cc23c159">faiss::IndexSplitVectors::search</a></div><div class="ttdeci">void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00655">MetaIndexes.cpp:655</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIDMap_html_a699ca4891bf3a437b2a182c04d33d9b9"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#a699ca4891bf3a437b2a182c04d33d9b9">faiss::IndexIDMap::remove_ids</a></div><div class="ttdeci">long remove_ids(const IDSelector &amp;sel) override</div><div class="ttdoc">remove ids adapted to IndexFlat </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00106">MetaIndexes.cpp:106</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a8e18f641854b2bde83ecff0a2f9a6f4e"><div class="ttname"><a href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">faiss::Index::metric_type</a></div><div class="ttdeci">MetricType metric_type</div><div class="ttdoc">type of metric this index uses for search </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00072">Index.h:72</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIDMap2_html_a3660adb35a3299bc328988f5ff2199fe"><div class="ttname"><a href="structfaiss_1_1IndexIDMap2.html#a3660adb35a3299bc328988f5ff2199fe">faiss::IndexIDMap2::reconstruct</a></div><div class="ttdeci">void reconstruct(idx_t key, float *recons) const override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00168">MetaIndexes.cpp:168</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIDMap_html_ac873cb03aa323a06dca5d6f3af5fe559"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#ac873cb03aa323a06dca5d6f3af5fe559">faiss::IndexIDMap::train</a></div><div class="ttdeci">void train(idx_t n, const float *x) override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00047">MetaIndexes.cpp:47</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html"><div class="ttname"><a href="structfaiss_1_1Index.html">faiss::Index</a></div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00060">Index.h:60</a></div></div>
<div class="ttc" id="structfaiss_1_1RangeSearchResult_html_aef57f9db99ca470c01bcdce0366cb6ff"><div class="ttname"><a href="structfaiss_1_1RangeSearchResult.html#aef57f9db99ca470c01bcdce0366cb6ff">faiss::RangeSearchResult::lims</a></div><div class="ttdeci">size_t * lims</div><div class="ttdoc">size (nq + 1) </div><div class="ttdef"><b>Definition:</b> <a href="AuxIndexStructures_8h_source.html#l00031">AuxIndexStructures.h:31</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a236897832a58dbb205e2d662c1929fb1"><div class="ttname"><a href="structfaiss_1_1Index.html#a236897832a58dbb205e2d662c1929fb1">faiss::Index::range_search</a></div><div class="ttdeci">virtual void range_search(idx_t n, const float *x, float radius, RangeSearchResult *result) const </div><div class="ttdef"><b>Definition:</b> <a href="Index_8cpp_source.html#l00028">Index.cpp:28</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a6e92732617c4dbe364e7678dd8773a7f"><div class="ttname"><a href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">faiss::Index::is_trained</a></div><div class="ttdeci">bool is_trained</div><div class="ttdoc">set if the Index does not require training, or if training is done already </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00069">Index.h:69</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_aaef6f4132b1f390121ebb11058baf190"><div class="ttname"><a href="structfaiss_1_1Index.html#aaef6f4132b1f390121ebb11058baf190">faiss::Index::reconstruct</a></div><div class="ttdeci">virtual void reconstruct(idx_t key, float *recons) const </div><div class="ttdef"><b>Definition:</b> <a href="Index_8cpp_source.html#l00054">Index.cpp:54</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIDMap_html_aeace75e53648c052d05c357b744e090b"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#aeace75e53648c052d05c357b744e090b">faiss::IndexIDMap::add_with_ids</a></div><div class="ttdeci">void add_with_ids(idx_t n, const float *x, const long *xids) override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00060">MetaIndexes.cpp:60</a></div></div>
<div class="ttc" id="structfaiss_1_1RangeSearchResult_html_aa8ff848474a4cc16c5464cc4ec187824"><div class="ttname"><a href="structfaiss_1_1RangeSearchResult.html#aa8ff848474a4cc16c5464cc4ec187824">faiss::RangeSearchResult::labels</a></div><div class="ttdeci">idx_t * labels</div><div class="ttdoc">result for query i is labels[lims[i]:lims[i+1]] </div><div class="ttdef"><b>Definition:</b> <a href="AuxIndexStructures_8h_source.html#l00035">AuxIndexStructures.h:35</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexSplitVectors_html_a70ba3367a08722fe4466dc49c21a4d2b"><div class="ttname"><a href="structfaiss_1_1IndexSplitVectors.html#a70ba3367a08722fe4466dc49c21a4d2b">faiss::IndexSplitVectors::IndexSplitVectors</a></div><div class="ttdeci">IndexSplitVectors(idx_t d, bool threaded=false)</div><div class="ttdoc">sum of dimensions seen so far </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00581">MetaIndexes.cpp:581</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIDMap_html_affa8a764304410c96489c2b2e178bcdb"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#affa8a764304410c96489c2b2e178bcdb">faiss::IndexIDMap::own_fields</a></div><div class="ttdeci">bool own_fields</div><div class="ttdoc">! the sub-index </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8h_source.html#l00028">MetaIndexes.h:28</a></div></div>
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